| 多视极化SAR图象相干斑抑制的研究 |
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| 引用本文： | 刘国庆,黄顺吉,熊红,A.Torre,F.Rubertone.多视极化SAR图象相干斑抑制的研究[J].电子与信息学报,1998,20(3):379-385. |
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| 作者姓名： | 刘国庆 黄顺吉 熊红 A.Torre F.Rubertone |
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| 作者单位： | 电子科技大学电子工程学院，电子科技大学电子工程学院，电子科技大学电子工程学院，Dept. of Remote Sensing Alenia Spazio SPA Rome 00131 Italy，Dept. of Remote Sensing Alenia Spazio SPA Rome 00131 Italy 成都 610054，成都 610054，成都 610054 |
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| 基金项目： | 电子科技大学与意大利Alenia Spazio SPA的合作课题资助 |
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| 摘 要： | 本文研究多视极化合成孔径雷达(SAR)图象的相干斑抑制,提出多视极化白化滤波(MPWF)法,并进一步将它发展成具有多通道输出的全极化滤波器。本文还定量地分析了MPWF方法抑制相干斑的能力,并在理论上同全功率法、加权法和功率均衡法进行了比较。应用NASA/JPL机载L波段四视全极化SAR数据的试验结果验证了所提方法的有效性和优越性,也说明了MPWF处理能显著地提高SAR图象的分类精度。
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| 关 键 词： | 极化合成孔径雷达 多视处理 乘性相干斑模型 相干斑抑制 纹理 分类 |
| 收稿时间： | 1997-1-15 |
| 修稿时间： | 1997-9-2 |
STUDY ON SPECKLE REDUCTION IN MULTI-LOOK POLARIMETRIC SAR IMAGE |
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| Liu Guoqing,Huang Shunji,Xiong Hong,A. Torre,F. Rubertone.STUDY ON SPECKLE REDUCTION IN MULTI-LOOK POLARIMETRIC SAR IMAGE[J].Journal of Electronics & Information Technology,1998,20(3):379-385. |
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| Authors: | Liu Guoqing Huang Shunji Xiong Hong A Torre F Rubertone |
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| Affiliation: | College of E. E.,Univ. of Electronic Science and Technology of China Chengdu 610054;Dept. of Remote Sensing Alenia Spazio SPA Rome 00131 Italy |
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| Abstract: | This paper studies on the speckle reduction in multi-look polarimetric SAR image. A novel method, named the multi-look polarimetric whitening filtering (MPWF) method, is presented, and is further extended to construct a fully polarimetric filter with multi-channel output. The paper also quantifies the amount of speckle reduction achievable by using the MPWF, and compares this method with the span, weighting and power equalization (PE) methods in theory. Experimental results with the NASA/JPL L-band 4-look polarimetric SAR data demonstrate the effectiveness and superiority of the MPWF, and show that the MPWF is of great advantage for enhancing SAR image classification. |
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| Keywords: | Polarimetric SAR Multi-look processing Multiplicative speckle model Speckle reduction Texture Classification |
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